A flexible steel conduit which is both listed by Underwriters Laboratories Inc. and certified by Canadian Standards Association for “Heavy-Duty” applications. It offers outstanding protection against sunlight (UV), wet, oily conditions, and is permitted for use in exposed or concealed locations.
Construction:
Inner Core:
Hot Dipped Galvanized Steel
3/8” – 1-1/4” Squarelock Profile with continuous bonding strip
1-1/2” – 4” Fully Interlocked Profile
Liquidtight Jacket:
Flexible PVC
Resistant to Oils and Mild Acids
Flame Retardant
Excellent Sunlight Resistance (UV)
Type LA gray jacketing outperforms the UL360 UV aging test by 4 times
Type LA black jacketing outperforms the UL360 UV aging test by 5 times
Marked HD for “Heavy-Duty”
Application:
This conduit is intended for installation in accordance with Article 350 of the NEC (ANSI/NFPA-70) and in section 14.5.4 of the ANSI/NFPA-79 Standard for Industrial Machinery:

Listed and marked for Direct Burial and in Poured Concrete
For containment of 1000 volt and lower potential circuits
Suitable as a grounding conductor when used for circuits rated up to 20A for the 3/8 & 1/2 inch trade sizes and 60A for the 3/4 through 1-1/4 inch trade sizes in lengths six feet or less per NEC Article 250.118(6). Larger sizes require separate grounding conductor.
Installations in hazardous (classified) locations:
Class I Div. 2: Article 501.10 (B)(2) & 501.30 (B)
Class II Div. 1: Article 502.10 (A)(2) & 502.30 (B) Div. 2: 502.10 (B)(2)
Class III Div. 1: Article 503.10 (A)(3) & 503.30 (B) Div. 2: 503.10 (B)
Installed under raised floors in Data Processing Areas Articles 645.5 (E)
Electric Signs and Outline Lighting over 1000 volts Articles 600.7/600.32(A)(1)
Permitted for Service Entrance wiring to six feet Article 230.43
Used as Feeders and Services at Marinas and Boatyards Article 553.7(B)
Wiring on Building Article 225.10
Conductor Enclosures Adjacent to Motors over 1000 V Article 430.223
Underground Service, Feeder, Branch Circuit, and Recreational Vehicle Site Feeder Circuit Conductors Article 551.80
Elevators and Hoistways Article 620.21
Pools and Fountains Article 680
Bodies of water. Article 682
Fire Pumps. Article 695
This conduit is intended for use according to the Canadian Electrical Code (CEC CSA 22.1-18) as described in clause 12-1300 for dry, damp or wet locations.

Conforms to CSA C22.2 No. 56-17 Annex A “Heavy Duty”
Hazardous Locations areas where flexibility is necessary:

Class I Div 2: CSA 22.1 J18-152 (1) (i)
Class II Div 1: CSA 22.1 J18-204 (4) (b)
Class II Div 2: CSA 22.1 J18-254 (1) (h)
Class III Div 1: CSA 22.1 J18-304 (1) (f)
Class III Div 2: CSA 22.1 J18-354 (h)
Zone 2: CSA 22.1 18-152 (1) (h)
Zone 20: CSA 22.1 18-192 (3) (a)
Zone 21: CSA 22.1 18-202 (4) (a)
Zone 22: CSA 22.1 18-252 (1) (h)
Markets:
Aerospace, Cell Towers, Construction, Data Centers, Datacomm, Defense, Fixture / AC Whips, Healthcare, Machine Tool (OEM), Mining, Oil & Gas Refineries, Power Plants, Renewable Energy, Security, Ship Building, Steel Mills, Telecommunications, Utilities, Wastewater Treatment